Ugaritic

rn - to shout (DUL 742)

Hapax legomenon in a fragmentary context (ˀan ˀarnn ḳl ‘I will raise my voice,’ 1.82:6)

PCS
*rnn - to shout (Kogan 2015: 218)
PCS *rnn ‘to shout’ is likely onomatopoetic. Attestations of this root in Aramaic are rather marginal.